53212454216209 has 2 divisors, whose sum is σ = 53212454216210. Its totient is φ = 53212454216208.

The previous prime is 53212454216149. The next prime is 53212454216219. The reversal of 53212454216209 is 90261245421235.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 48491516052225 + 4720938163984 = 6963585^2 + 2172772^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53212454216209 is a prime.

It is not a weakly prime, because it can be changed into another prime (53212454216219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26606227108104 + 26606227108105.

It is an arithmetic number, because the mean of its divisors is an integer number (26606227108105).

Almost surely, 2^{53212454216209} is an apocalyptic number.

It is an amenable number.

53212454216209 is a deficient number, since it is larger than the sum of its proper divisors (1).

53212454216209 is an equidigital number, since it uses as much as digits as its factorization.

53212454216209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1036800, while the sum is 46.

The spelling of 53212454216209 in words is "fifty-three trillion, two hundred twelve billion, four hundred fifty-four million, two hundred sixteen thousand, two hundred nine".